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ChatGPT by OpenAI is a conversational AI platform powered by GPT-5 and o-series reasoning models for writing, programming, data analysis, and voice interaction.

Zoom AI Companion is an enterprise AI assistant included in Zoom Workplace that generates automated meeting summaries, live call Q&A, and smart action items.

Siri AI is Apple's upgraded conversational voice assistant featuring on-screen awareness, personal context understanding, and seamless cross-app actions.

Character.AI is a conversational entertainment platform for chatting with millions of custom AI personas, featuring voice calls, group rooms, and persistent memory.

Google Gemini is a multimodal AI ecosystem powered by Gemini 3.1 Pro and Flash models for reasoning across text, code, video, audio, and images.

Perplexity is an AI-powered conversational search engine delivering real-time, source-cited answers with model switching across GPT-5, Claude, and Sonar.

DeepSeek is an open-weights AI ecosystem and assistant specializing in programming, mathematics, and logical reasoning via DeepSeek-V4 models.

Microsoft Copilot is an enterprise AI assistant featuring Think Deeper reasoning, Copilot Voice, Copilot Vision, and deep Microsoft 365 integration.

Claude by Anthropic is an AI assistant powered by Claude Sonnet 5 and Opus 5 models, featuring interactive Artifacts, Projects, and Claude Code.

Kimi K3 by Moonshot AI is a frontier AI chatbot featuring a 2 million token context window, agent swarm orchestration, and complex coding and research reasoning.

PolyBuzz is an AI character companion and roleplay platform featuring over 20 million community personas, emotional voice messaging, and interactive story modes.

Qwen AI by Alibaba Cloud is an open-weights AI family and free chatbot featuring Qwen3.8-Max (2.4T params), multimodal reasoning, and coding tools.

Grok by xAI is a frontier AI assistant powered by the Grok 4 family, featuring real-time X platform data, DeepSearch research, and Think reasoning.

Meta AI is a free conversational assistant powered by Llama foundation models, integrated across WhatsApp, Instagram, Messenger, and web with Imagine image tools.

Duck.ai by DuckDuckGo is a privacy-first AI chat aggregator offering anonymous, untracked access to Claude, GPT-5, and Mistral without requiring an account.

Janitor AI is a character chat and roleplay platform that features free JanitorLLM chat, custom persona creation, and Bring-Your-Own-Key external API support.

Ernie Bot by Baidu is a leading Chinese AI assistant powered by ERNIE 4.5 and X1 reasoning models for search grounding, multimodal reasoning, and coding.

ChatOn AI is a multi-model productivity chatbot assistant by AIBY Inc. integrating GPT-5, Claude, and Gemini for document analysis, writing, and image generation.

Monica AI is an all-in-one browser copilot combining GPT-4o, Claude 3.5, and Gemini across web pages for instant chat, reading summaries, writing, and search.

Liner is an AI academic research assistant featuring Liner Scholar with 460M+ academic records, deep research workflows, and verified scholarly citations.

Mistral Le Chat is Mistral AI's conversational assistant and workspace offering free access to Mistral Large 3, web search, document analysis, and Canvas editing.